Question

When a certain number is multiplied by 7 the product consists entirely of fives find the least value of such a number?

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Secondary SchoolMath 5 points

When a certain number is multiplied by 7, the product consists entirely of fives, find the least value of such a number.

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hpkagr494 Virtuoso

When 79365 is multiplied by 7 the product consists entirely of fives.

7*79365= 555555

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karwasra

karwasra Expert

By:- Hit and trials

let the certain number is =X

apply the condition of we multiply by 7 product consist entirely of fives

X*7=5,55,555,5555,55555 or 555555

X= 5/7,55/7,555/7,5555/7,55555/7 or 55555.

so least value of such number is

===>(1)5/7= 0.714 ( in decimals)

===>(2)555555/7=79365 ( without decimals )